31afdo

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← 30afdo 31afdo 32afdo →
Prime factorization 31 (prime)
Dual sharp fifth 47/31 (720.471c)
Dual flat fifth 46/31 (683.238c)

31afdo (arithmetic frequency division of the octave), or 31odo (otonal division of the octave), divides the octave into 31 parts of 1/31 each. As a scale it may be known as mode 31 of the harmonic series or the Over-31 scale.